CN113205446A - Method and device for identifying semitransparent watermark in video and electronic equipment - Google Patents

Method and device for identifying semitransparent watermark in video and electronic equipment Download PDF

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CN113205446A
CN113205446A CN202110465041.8A CN202110465041A CN113205446A CN 113205446 A CN113205446 A CN 113205446A CN 202110465041 A CN202110465041 A CN 202110465041A CN 113205446 A CN113205446 A CN 113205446A
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watermark
image
video file
semitransparent
semi
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马健
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Beijing Qihoo Technology Co Ltd
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    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T1/00—General purpose image data processing
    • G06T1/0021—Image watermarking
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T7/00—Image analysis
    • G06T7/90—Determination of colour characteristics
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T2201/00—General purpose image data processing
    • G06T2201/005—Image watermarking
    • G06T2201/0065—Extraction of an embedded watermark; Reliable detection
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T2207/00—Indexing scheme for image analysis or image enhancement
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    • G06T2207/10016—Video; Image sequence

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Abstract

The invention discloses a method and a device for identifying a semitransparent watermark in a video and electronic equipment. The method comprises the following steps: selecting a frame of image with a pure black background from a video file overlapped with a semitransparent watermark; and identifying the overlapped semitransparent watermark from the image of the pure black background according to a mode of overlapping the semitransparent watermark in the video file. According to the technical scheme, the overlapped semitransparent watermark is identified from the selected image with the pure black background according to the mode of overlapping the semitransparent watermark in the video file, the problem that the semitransparent watermark is difficult to identify in the prior art is solved, and the semitransparent watermark in the video can be effectively identified.

Description

Method and device for identifying semitransparent watermark in video and electronic equipment
Technical Field
The invention relates to the technical field of computers, in particular to a method and a device for identifying a semitransparent watermark in a video, electronic equipment and a computer readable storage medium.
Background
With the popularization of the camera shooting technology and the development of the internet technology, the application of videos is more and more extensive. The requirements of the long video on the flow and the video quality are different, and the duration and the simple manufacturing process of the short video enable the short video to be developed in the current environment. Many users of high-quality UGC (User generated Content) and PGC (Professional generated Content) perform video authoring on a few video sites, and cannot well spread high-quality videos.
The video aggregation platform with large flow rate has billions of users, can well integrate high-quality videos, and can bring more high-quality videos to more users by means of flow rate advantages. However, different watermarks are added to videos of various video sites, and the video aggregation platform needs to identify and remove the watermarks when integrating the videos of various video sites.
The watermarks of some video sites exist in a semitransparent mode, change along with the change of images of video files, have no fixed color, and change like other non-watermark pixel points. In the same video file, the watermark colors of different images are different, and the identification and removal by the existing method are difficult.
Disclosure of Invention
In view of the above problems, the present invention has been made to provide a method for removing a transparent watermark in a video and a corresponding apparatus for removing a transparent watermark in a video, which overcome or at least partially solve the above problems.
According to an aspect of the present invention, there is provided a method of identifying a semi-transparent watermark in a video, wherein the method comprises:
selecting a frame of image with a pure black background from a video file overlapped with a semitransparent watermark;
and identifying the overlapped semitransparent watermark from the image of the pure black background according to a mode of overlapping the semitransparent watermark in the video file.
Optionally, the selecting a frame of image with a black background includes: an image with RGB values of (0,0,0) is selected.
Optionally, the manner of superimposing a semi-transparent watermark in the video file is as follows:
Figure BDA0003043472460000021
wherein the content of the first and second substances,
Figure BDA0003043472460000022
the color value of a pixel point (x, y) in an image F of the video file is obtained; alpha is the first coefficient of the superimposed semi-transparent watermark,
Figure BDA0003043472460000023
the color value of a pixel point (x, y) in an image F of the video file before the semitransparent watermark is superposed is taken as a color value; beta is a second coefficient of the superposed semitransparent watermark; wmx,yAnd (R, G and B) is the color value of the translucent watermark in the image F of the video file at the pixel point (x, y).
Optionally, wherein,
identifying the superimposed semi-transparent watermark from the image of the solid black background according to the following formula:
Figure BDA0003043472460000024
wherein the content of the first and second substances,
Figure BDA0003043472460000025
image F being the solid black backgroundbAnd (5) the color value of the middle pixel point (x, y).
Optionally, the selecting a frame of image with a pure black background from the video file superimposed with the semi-transparent watermark includes:
and selecting a frame of image with a pure black background from the video file which is superimposed with the semitransparent watermark and is arranged on the appointed video site.
According to another aspect of the present invention, there is provided an apparatus for identifying a semi-transparent watermark in a video, wherein the apparatus comprises:
the pure black background image selection unit is suitable for selecting a frame of pure black background image from the video file superimposed with the semitransparent watermark;
and the semitransparent watermark identifying unit is suitable for identifying the overlapped semitransparent watermark from the image of the pure black background according to a mode of overlapping the semitransparent watermark in the video file.
Optionally, the pure black background image selection unit is further adapted to:
an image with RGB values of (0,0,0) is selected.
Optionally, the manner of superimposing a semi-transparent watermark in the video file is as follows:
Figure BDA0003043472460000026
wherein the content of the first and second substances,
Figure BDA0003043472460000031
the color value of a pixel point (x, y) in an image F of the video file is obtained; alpha is the first coefficient of the superimposed semi-transparent watermark,
Figure BDA0003043472460000032
the color value of a pixel point (x, y) in an image F of the video file before the semitransparent watermark is superposed is taken as a color value; beta is a second coefficient of the superposed semitransparent watermark; wmx,yAnd (R, G and B) is the color value of the translucent watermark in the image F of the video file at the pixel point (x, y).
Optionally, the translucent watermark identification unit is further adapted to:
identifying the superimposed semi-transparent watermark from the image of the solid black background according to the following formula:
Figure BDA0003043472460000033
wherein the content of the first and second substances,
Figure BDA0003043472460000034
image F being the solid black backgroundbAnd (5) the color value of the middle pixel point (x, y).
Optionally, the pure black background image selection unit is further adapted to:
and selecting a frame of image with a pure black background from the video file which is superimposed with the semitransparent watermark and is arranged on the appointed video site.
In accordance with another aspect of the present invention, there is provided an electronic apparatus, wherein the electronic apparatus includes:
a processor; and the number of the first and second groups,
a memory arranged to store computer executable instructions that, when executed, cause the processor to perform the method described above.
According to another aspect of the present invention, there is provided a computer readable storage medium, wherein the computer readable storage medium stores one or more programs which, when executed by a processor, implement the above-described method.
According to the technical scheme, the overlapped semitransparent watermark is identified from the selected image with the pure black background according to the mode of overlapping the semitransparent watermark in the video file, the problem that the semitransparent watermark is difficult to identify in the prior art is solved, and the semitransparent watermark in the video can be effectively identified.
According to an aspect of the present invention, there is provided a method for removing a semi-transparent watermark in a video, wherein the method includes:
selecting a frame of image with a pure black background from a video file overlapped with a semitransparent watermark;
identifying the overlapped semitransparent watermark from the image of the pure black background according to a mode of overlapping the semitransparent watermark in the video file;
selecting a frame of non-black image with a solid background from a video file on which a semitransparent watermark is superimposed;
and removing the semitransparent watermark in the video file according to the mode of superposing the semitransparent watermark in the video file, the image of the non-black solid background and the identified semitransparent watermark.
Optionally, the selecting a frame of image with a black background includes: an image with RGB values of (0,0,0) is selected.
The selecting a frame of image with non-black solid background comprises: an image is selected in which the RGB value of a frame is not 0 and at least one value of RGB is 255.
Optionally, the manner of superimposing a semi-transparent watermark in the video file is as follows:
Figure BDA0003043472460000041
wherein the content of the first and second substances,
Figure BDA0003043472460000042
the color value of a pixel point (x, y) in an image F of the video file is obtained; alpha is the first coefficient of the superimposed semi-transparent watermark,
Figure BDA0003043472460000043
the color value of a pixel point (x, y) in an image F of the video file before the semitransparent watermark is superposed is taken as a color value; beta is a second coefficient of the superposed semitransparent watermark; wmx,yAnd (R, G and B) is the color value of the translucent watermark in the image F of the video file at the pixel point (x, y).
Optionally, the superimposed semi-transparent watermark is identified from the image of the solid black background according to the following formula:
Figure BDA0003043472460000044
wherein the content of the first and second substances,
Figure BDA0003043472460000045
image F being the solid black backgroundbAnd (5) the color value of the middle pixel point (x, y).
Optionally, the removing the semi-transparent watermark from the video file according to the manner of superimposing the semi-transparent watermark in the video file, the image of the non-black solid background, and the identified semi-transparent watermark includes:
calculating a first coefficient of the overlapped semitransparent watermark according to the mode of overlapping the semitransparent watermark in the video file, the image of the non-black solid background and the identified semitransparent watermark;
determining color values of pixel points of images of the video file before the semitransparent watermark is superimposed according to a mode of superimposing the semitransparent watermark in the video file, the identified semitransparent watermark and a first coefficient of superimposing the semitransparent watermark, and removing the semitransparent watermark in the video file.
Optionally, the first coefficient of the superimposed semi-transparent watermark is calculated according to the following formula:
Figure BDA0003043472460000046
wherein alpha is a first coefficient of the superimposed semi-transparent watermark;
Figure BDA0003043472460000047
the color value of each pixel point of the image with the non-black solid background;
Figure BDA0003043472460000048
and the color value of a pixel point (x, y) of the image of the non-black solid background before the semitransparent watermark is superposed.
Optionally, the color value of each pixel point of each image of the video file before the semitransparent watermark is superimposed is determined according to the following formula:
Figure BDA0003043472460000051
wherein the content of the first and second substances,
Figure BDA0003043472460000052
the color value of a pixel point (x, y) of an image F of the video file before the semitransparent watermark is superposed;
Figure BDA0003043472460000053
is the color value of a pixel point (x, y) of an image F of the video file; alpha is a stackThe first coefficient of the semi-transparent watermark.
Optionally, the selecting a frame of image with a pure black background from the video file superimposed with the semi-transparent watermark includes:
and selecting a frame of image with a pure black background from the video file which is superimposed with the semitransparent watermark and is arranged on the appointed video site.
According to another aspect of the present invention, there is provided an apparatus for removing a semi-transparent watermark from a video, wherein the apparatus comprises:
the background image selection unit is suitable for selecting a frame of image with a pure black background and a frame of image with a non-black pure color background from the video file on which the semitransparent watermark is superimposed;
the semitransparent watermark identifying unit is suitable for identifying the overlapped semitransparent watermark from the image of the pure black background according to a mode of overlapping the semitransparent watermark in the video file;
and the semitransparent watermark removing unit is suitable for removing the semitransparent watermark in the video file according to a mode of superposing the semitransparent watermark in the video file, the image of the non-black solid background and the identified semitransparent watermark.
Optionally, the background image selection unit is further adapted to:
selecting an image with RGB value (0,0,0) as an image of a pure black background.
Selecting a frame of image with RGB value not 0 and at least one value of 255 in RGB as the image of non-black pure color background.
Optionally, the manner of superimposing a semi-transparent watermark in the video file is as follows:
Figure BDA0003043472460000054
wherein the content of the first and second substances,
Figure BDA0003043472460000055
the color value of a pixel point (x, y) in an image F of the video file is obtained; semi-transparent alpha in superpositionThe first coefficient of the bright watermark is then,
Figure BDA0003043472460000056
the color value of a pixel point (x, y) in an image F of the video file before the semitransparent watermark is superposed is taken as a color value; beta is a second coefficient of the superposed semitransparent watermark; wmx,yAnd (R, G and B) is the color value of the translucent watermark in the image F of the video file at the pixel point (x, y).
Optionally, the translucent watermark identification unit is further adapted to:
identifying the superimposed semi-transparent watermark from the image of the solid black background according to the following formula:
Figure BDA0003043472460000061
wherein the content of the first and second substances,
Figure BDA0003043472460000062
image F being the solid black backgroundbAnd (5) the color value of the middle pixel point (x, y).
Optionally, the semi-transparent watermark removing unit includes:
the first coefficient calculation module is suitable for calculating a first coefficient of the superposed semitransparent watermark according to the mode of superposing the semitransparent watermark in the video file, the image of the non-black solid background and the identified semitransparent watermark;
and the semitransparent watermark removing module is suitable for determining the color value of each pixel point of each image of the video file before the semitransparent watermark is superimposed according to the mode of superimposing the semitransparent watermark in the video file, the identified semitransparent watermark and the first coefficient of superimposing the semitransparent watermark, and removing the semitransparent watermark in the video file.
Optionally, the first coefficient calculating module is specifically adapted to:
calculating a first coefficient of the superimposed semi-transparent watermark according to the following formula:
Figure BDA0003043472460000063
wherein alpha is a first coefficient of the superimposed semi-transparent watermark;
Figure BDA0003043472460000064
the color value of each pixel point of the image with the non-black solid background;
Figure BDA0003043472460000065
and the color value of a pixel point (x, y) of the image of the non-black solid background before the semitransparent watermark is superposed.
Optionally, the semi-transparent watermark removal module is further adapted to:
determining the color value of each pixel point of each image of the video file before the semitransparent watermark is superimposed according to the following formula:
Figure BDA0003043472460000066
wherein the content of the first and second substances,
Figure BDA0003043472460000067
the color value of a pixel point (x, y) of an image F of the video file before the semitransparent watermark is superposed;
Figure BDA0003043472460000068
is the color value of a pixel point (x, y) of an image F of the video file; alpha is the first coefficient of the superimposed semi-transparent watermark.
Optionally, the background image selection unit is further adapted to:
and selecting a frame of image with a pure black background from the video file which is superimposed with the semitransparent watermark and is arranged on the appointed video site.
In accordance with another aspect of the present invention, there is provided an electronic apparatus, wherein the electronic apparatus includes:
a processor; and the number of the first and second groups,
a memory arranged to store computer executable instructions that, when executed, cause the processor to perform the method described above.
According to another aspect of the present invention, there is provided a computer readable storage medium, wherein the computer readable storage medium stores one or more programs which, when executed by a processor, implement the above-described method.
The technical scheme of the invention identifies the overlapped semitransparent watermark from the selected image of the pure black background according to the mode of overlapping the semitransparent watermark in the video file, removes the semitransparent watermark from the video file according to the mode of overlapping the semitransparent watermark in the video file, the selected image of the non-black pure color background and the identified semitransparent watermark, overcomes the problem that the semitransparent watermark is difficult to identify and remove in the prior art, and can realize effective identification and removal of the semitransparent watermark in the video.
The foregoing description is only an overview of the technical solutions of the present invention, and the embodiments of the present invention are described below in order to make the technical means of the present invention more clearly understood and to make the above and other objects, features, and advantages of the present invention more clearly understandable.
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Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:
FIG. 1 shows a flow diagram of a method of identifying a semi-transparent watermark in a video according to one embodiment of the invention;
FIG. 2 shows a schematic diagram of a solid black background image according to one embodiment of the invention;
fig. 3 is a schematic structural diagram of an apparatus for identifying a semi-transparent watermark in a video according to an embodiment of the present invention;
FIG. 4 shows a schematic structural diagram of an electronic device according to one embodiment of the invention;
FIG. 5 illustrates a schematic structural diagram of a computer-readable storage medium according to one embodiment of the present invention;
FIG. 6 is a flow chart illustrating a method for removing a semi-transparent watermark in a video according to an embodiment of the present invention;
FIG. 7 shows a schematic diagram of a pure white background image of one embodiment of the present invention;
FIG. 8a shows a schematic diagram of a semi-transparent watermark in a video according to an embodiment of the invention;
FIG. 8b is a diagram illustrating the effect of removing a semi-transparent watermark in a video according to an embodiment of the present invention;
fig. 9 is a schematic structural diagram illustrating an apparatus for removing a semi-transparent watermark in a video according to an embodiment of the present invention;
FIG. 10 shows a schematic structural diagram of an electronic device according to one embodiment of the invention;
fig. 11 shows a schematic structural diagram of a computer-readable storage medium according to an embodiment of the present invention.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
Fig. 1 shows a flow diagram of a method of identifying a semi-transparent watermark in a video according to an embodiment of the invention. As shown in fig. 1, the method of the embodiment of the present invention includes:
s11: selecting a frame of image with a pure black background from a video file overlapped with a semitransparent watermark;
s12: and identifying the overlapped semitransparent watermark from the image of the pure black background according to a mode of overlapping the semitransparent watermark in the video file.
It should be noted that although the semi-transparent watermark in the video file has no fixed color, it is still different from the surrounding area, and the principle of superimposing the semi-transparent watermark is to superimpose the color value of the watermark and the color value of the video image in some way. Since the RGB values of the image of the solid black background are (0,0,0), the translucent watermark is easily recognized from the image of the solid black background.
According to the embodiment of the invention, the overlapped semitransparent watermark is identified from the selected image of the pure black background according to the mode of overlapping the semitransparent watermark in the video file, so that the problem that the semitransparent watermark is difficult to identify in the prior art is solved, and the semitransparent watermark in the video can be effectively identified.
In another embodiment of the present invention, the selecting a frame of pure black background image in step S11 of the method shown in fig. 1 includes: an image with RGB values of (0,0,0) is selected.
It can be understood that the video file is composed of multiple frames of images, and an image with RGB value (0,0,0) of one frame is selected as an image of a pure black background (as shown in fig. 2), the background in the image is pure black, and a semitransparent watermark is superimposed, and the RGB value of the pixel of the semitransparent watermark is not (0,0,0), but the RGB value of the pixel of the non-semitransparent watermark is (0,0, 0).
There are various ways of superimposing a semi-transparent watermark in a video file, the most common way of superimposing is linear superimposition, and in another embodiment of the present invention, the way of superimposing a semi-transparent watermark in the video file is:
Figure BDA0003043472460000091
wherein the content of the first and second substances,
Figure BDA0003043472460000092
the color value of a pixel point (x, y) in an image F of the video file is obtained; alpha is the first coefficient of the superimposed semi-transparent watermark,
Figure BDA0003043472460000093
the color value of a pixel point (x, y) in an image F of the video file before the semitransparent watermark is superposed is taken as a color value; beta is a second coefficient of the superposed semitransparent watermark; wmx,yAnd (R, G and B) is the color value of the translucent watermark in the image F of the video file at the pixel point (x, y).
In another embodiment of the invention, the superimposed semi-transparent watermark is identified from the image of the solid black background according to the following formula:
Figure BDA0003043472460000094
wherein the content of the first and second substances,
Figure BDA0003043472460000095
image F being the solid black backgroundbAnd (5) the color value of the middle pixel point (x, y).
Understandably, the image F on a solid black backgroundbIn the method, the RGB value of each pixel point before the semitransparent watermark is superimposed is (0,0,0), then
Figure BDA0003043472460000096
Combining the above-mentioned manner of superimposing a semitransparent watermark in a video file, the superimposed semitransparent watermark can be known
Figure BDA0003043472460000097
In another alternative embodiment of the present invention, the step S11 of the method shown in fig. 1 is a method for selecting a frame of image with a solid black background from a video file superimposed with a semi-transparent watermark, including:
and selecting a frame of image with a pure black background from the video file which is superimposed with the semitransparent watermark and is arranged on the appointed video site.
It can be understood that the video aggregation platform aggregates videos of a plurality of video sites, and video files of different video sites are overlaid with different watermarks, so that images with pure black backgrounds need to be selected for different video sites respectively.
Fig. 3 is a schematic structural diagram of an apparatus for identifying a semi-transparent watermark in a video according to an embodiment of the present invention. As shown in fig. 3, the apparatus of the embodiment of the present invention includes:
a pure black background image selection unit 31 adapted to select a frame of pure black background image from the video file on which the translucent watermark is superimposed;
and the semitransparent watermark identifying unit 32 is suitable for identifying the overlapped semitransparent watermark from the image of the pure black background according to the mode of overlapping the semitransparent watermark in the video file.
It should be noted that although the semi-transparent watermark in the video file has no fixed color, it is still different from the surrounding area, and the principle of superimposing the semi-transparent watermark is to superimpose the color value of the watermark and the color value of the video image in some way. Since the RGB values of the image of the solid black background are (0,0,0), the translucent watermark is easily recognized from the image of the solid black background.
According to the embodiment of the invention, the overlapped semitransparent watermark is identified from the selected image of the pure black background according to the mode of overlapping the semitransparent watermark in the video file, so that the problem that the semitransparent watermark is difficult to identify in the prior art is solved, and the semitransparent watermark in the video can be effectively identified.
In another embodiment of the invention, the solid black background image selection unit 31 of the apparatus shown in fig. 3 is further adapted to:
an image with RGB values of (0,0,0) is selected.
It can be understood that the video file is composed of multiple frames of images, and an image with RGB value (0,0,0) of one frame is selected as an image of a pure black background (as shown in fig. 2), the background in the image is pure black, and a semitransparent watermark is superimposed, and the RGB value of the pixel of the semitransparent watermark is not (0,0,0), but the RGB value of the pixel of the non-semitransparent watermark is (0,0, 0).
There are various ways of superimposing a semi-transparent watermark in a video file, the most common way of superimposing is linear superimposition, and in another embodiment of the present invention, the way of superimposing a semi-transparent watermark in the video file is:
Figure BDA0003043472460000101
wherein the content of the first and second substances,
Figure BDA0003043472460000102
the color value of a pixel point (x, y) in an image F of the video file is obtained; alpha is the first coefficient of the superimposed semi-transparent watermark,
Figure BDA0003043472460000103
the color value of a pixel point (x, y) in an image F of the video file before the semitransparent watermark is superposed is taken as a color value; beta is a second coefficient of the superposed semitransparent watermark; wmx,yAnd (R, G and B) is the color value of the translucent watermark in the image F of the video file at the pixel point (x, y).
In another embodiment of the invention, the translucent watermark identification unit 32 of the arrangement shown in fig. 3 is further adapted to:
identifying the superimposed semi-transparent watermark from the image of the solid black background according to the following formula:
Figure BDA0003043472460000111
wherein the content of the first and second substances,
Figure BDA0003043472460000112
image F being the solid black backgroundbAnd (5) the color value of the middle pixel point (x, y).
Understandably, the image F on a solid black backgroundbIn the method, the RGB value of each pixel point before the semitransparent watermark is superimposed is (0,0,0), then
Figure BDA0003043472460000113
Combining the above-mentioned manner of superimposing a semitransparent watermark in a video file, the superimposed semitransparent watermark can be known
Figure BDA0003043472460000114
In another embodiment of the present invention, the pure black background image selection unit 32 is further adapted to:
and selecting a frame of image with a pure black background from the video file which is superimposed with the semitransparent watermark and is arranged on the appointed video site.
It can be understood that the video aggregation platform aggregates videos of a plurality of video sites, and video files of different video sites are overlaid with different watermarks, so that images with pure black backgrounds need to be selected for different video sites respectively. According to the technical scheme, the overlapped semitransparent watermark is identified from the selected image with the pure black background according to the mode of overlapping the semitransparent watermark in the video file, the problem that the semitransparent watermark is difficult to identify in the prior art is solved, and the semitransparent watermark in the video can be effectively identified.
Fig. 6 is a flowchart illustrating a method for removing a semi-transparent watermark in a video according to an embodiment of the present invention. As shown in fig. 6, the method of the embodiment of the present invention includes:
s61: selecting a frame of image with a pure black background from a video file overlapped with a semitransparent watermark;
s62: identifying the overlapped semitransparent watermark from the image of the pure black background according to a mode of overlapping the semitransparent watermark in the video file;
it should be noted that although the semi-transparent watermark in the video file has no fixed color, it is still different from the surrounding area, and the principle of superimposing the semi-transparent watermark is to superimpose the color value of the watermark and the color value of the video image in some way. Since the RGB values of the image of the solid black background are (0,0,0), the translucent watermark is easily recognized from the image of the solid black background.
S63: selecting a frame of non-black image with a solid background from a video file on which a semitransparent watermark is superimposed;
s64: and removing the semitransparent watermark in the video file according to the mode of superposing the semitransparent watermark in the video file, the image of the non-black solid background and the identified semitransparent watermark.
It can be understood that, since the RGB values of the image of the non-black solid background are known, the embodiment of the present invention may remove the semi-transparent watermark from the video file according to the manner of superimposing the semi-transparent watermark in the video file, the image of the non-black solid background, and the identified semi-transparent watermark.
According to the method and the device for identifying the semi-transparent watermark in the video file, the overlapped semi-transparent watermark is identified from the selected image of the pure black background according to the mode of overlapping the semi-transparent watermark in the video file, the selected image of the non-black pure color background and the identified semi-transparent watermark, the semi-transparent watermark in the video file is removed, the problem that the semi-transparent watermark is difficult to identify and remove in the prior art is solved, and the effective identification and removal of the semi-transparent watermark in the video can be realized.
In another embodiment of the present invention, in step S61 of the method shown in fig. 6, the selecting a frame of image with a solid black background includes: an image with RGB values of (0,0,0) is selected.
The selecting a frame of image with non-black solid background comprises: an image is selected in which the RGB value of a frame is not 0 and at least one value of RGB is 255.
It can be understood that the video file is composed of multiple frames of images, and an image with RGB value (0,0,0) of one frame is selected as an image of a pure black background (as shown in fig. 2), the background in the image is pure black, and a semitransparent watermark is superimposed, and the RGB value of the pixel of the semitransparent watermark is not (0,0,0), but the RGB value of the pixel of the non-semitransparent watermark is (0,0, 0). Selecting a frame of image with RGB value not 0 and at least one value of 255 in RGB as the image of the non-black solid background. Preferably, the image of the non-black solid background is an image of a white background (as shown in fig. 7) in which the background is solid white and a semi-transparent watermark is superimposed, the RGB values of the pixels of the semi-transparent watermark are not (255,255,255), and the RGB values of the pixels of the non-semi-transparent watermark are (255,255,255).
There are various ways of superimposing a semi-transparent watermark in a video file, the most common way of superimposing is linear superimposition, and in another embodiment of the present invention, the way of superimposing a semi-transparent watermark in the video file is:
Figure BDA0003043472460000121
wherein the content of the first and second substances,
Figure BDA0003043472460000122
the color value of a pixel point (x, y) in an image F of the video file is obtained; alpha is the first coefficient of the superimposed semi-transparent watermark,
Figure BDA0003043472460000123
the color value of a pixel point (x, y) in an image F of the video file before the semitransparent watermark is superposed is taken as a color value; beta is a second coefficient of the superposed semitransparent watermark; wmx,yAnd (R, G and B) is the color value of the translucent watermark in the image F of the video file at the pixel point (x, y).
In another embodiment of the invention, the superimposed semi-transparent watermark is identified from the image of the solid black background according to the following formula:
Figure BDA0003043472460000131
wherein the content of the first and second substances,
Figure BDA0003043472460000132
image F being the solid black backgroundbAnd (5) the color value of the middle pixel point (x, y).
Understandably, the image F on a solid black backgroundbIn the method, the RGB value of each pixel point before the semitransparent watermark is superimposed is (0,0,0), then
Figure BDA0003043472460000133
Combining the above-mentioned method of superimposing a semitransparent watermark in a video file, the superimpositionAdded semi-transparent watermark
Figure BDA0003043472460000134
In another optional embodiment of the present invention, the removing the semi-transparent watermark from the video file according to the manner of superimposing the semi-transparent watermark in the video file, the image of the non-black solid background and the identified semi-transparent watermark includes:
calculating a first coefficient of the overlapped semitransparent watermark according to the mode of overlapping the semitransparent watermark in the video file, the image of the non-black solid background and the identified semitransparent watermark;
determining color values of pixel points of images of the video file before the semitransparent watermark is superimposed according to a mode of superimposing the semitransparent watermark in the video file, the identified semitransparent watermark and a first coefficient of superimposing the semitransparent watermark, and removing the semitransparent watermark in the video file.
Specifically, the first coefficient of the superimposed translucent watermark is calculated according to the following formula:
Figure BDA0003043472460000135
wherein alpha is a first coefficient of the superimposed semi-transparent watermark;
Figure BDA0003043472460000136
the color value of each pixel point of the image with the non-black solid background;
Figure BDA0003043472460000137
and the color value of a pixel point (x, y) of the image of the non-black solid background before the semitransparent watermark is superposed.
Specifically, the color value of each pixel point of each image of the video file before the semitransparent watermark is superimposed is determined according to the following formula:
Figure BDA0003043472460000138
wherein the content of the first and second substances,
Figure BDA0003043472460000139
the color value of a pixel point (x, y) of an image F of the video file before the semitransparent watermark is superposed;
Figure BDA00030434724600001310
is the color value of a pixel point (x, y) of an image F of the video file; alpha is the first coefficient of the superimposed semi-transparent watermark.
Comparing fig. 8a and fig. 8b, it can be seen that the embodiment of the present invention can achieve effective identification and removal of a semi-transparent watermark in a video.
In another embodiment of the present invention, the step S61 of the method shown in fig. 6 is a method for selecting a frame of image with a solid black background from a video file superimposed with a semitransparent watermark, including:
and selecting a frame of image with a pure black background from the video file which is superimposed with the semitransparent watermark and is arranged on the appointed video site.
It can be understood that the video aggregation platform aggregates videos of a plurality of video sites, and video files of different video sites are overlaid with different watermarks, so that images with pure black backgrounds need to be selected for different video sites respectively.
Fig. 9 is a schematic structural diagram illustrating an apparatus for removing a semi-transparent watermark in a video according to an embodiment of the present invention. As shown in fig. 9, the apparatus of the embodiment of the present invention includes:
a background image selecting unit 91 adapted to select a frame of image with a solid black background and a frame of image with a non-black solid background from the video file on which the translucent watermark is superimposed;
a semi-transparent watermark identifying unit 92 adapted to identify a semi-transparent watermark superimposed from the image of the solid black background according to a manner of superimposing the semi-transparent watermark in the video file;
and a semitransparent watermark removing unit 93, adapted to remove a semitransparent watermark in the video file according to a manner of superimposing a semitransparent watermark in the video file, the image of the non-black solid background, and the identified semitransparent watermark.
According to the method and the device for identifying the semi-transparent watermark in the video file, the overlapped semi-transparent watermark is identified from the selected image of the pure black background according to the mode of overlapping the semi-transparent watermark in the video file, the selected image of the non-black pure color background and the identified semi-transparent watermark, the semi-transparent watermark in the video file is removed, the problem that the semi-transparent watermark is difficult to identify and remove in the prior art is solved, and the effective identification and removal of the semi-transparent watermark in the video can be realized.
In another embodiment of the invention, the background image selection unit 91 of the apparatus shown in fig. 9 is further adapted to:
selecting an image with RGB value (0,0,0) as an image of a pure black background.
Selecting a frame of image with RGB value not 0 and at least one value of 255 in RGB as the image of non-black pure color background.
In another embodiment of the present invention, the manner of superimposing the semi-transparent watermark in the video file is as follows:
Figure BDA0003043472460000141
wherein the content of the first and second substances,
Figure BDA0003043472460000142
the color value of a pixel point (x, y) in an image F of the video file is obtained; alpha is the first coefficient of the superimposed semi-transparent watermark,
Figure BDA0003043472460000151
the color value of a pixel point (x, y) in an image F of the video file before the semitransparent watermark is superposed is taken as a color value; beta is a second coefficient of the superposed semitransparent watermark; wmx,y(R, G, B) is the translucent watermark in the image F of the video file at a pixel pointx, y) color values.
In another embodiment of the invention, the translucent watermark identification unit 92 of the apparatus shown in fig. 9 is further adapted to:
identifying the superimposed semi-transparent watermark from the image of the solid black background according to the following formula:
Figure BDA0003043472460000152
wherein the content of the first and second substances,
Figure BDA0003043472460000153
image F being the solid black backgroundbAnd (5) the color value of the middle pixel point (x, y).
In another embodiment of the present invention, the translucent watermark removing unit 93 of the apparatus shown in fig. 9 includes:
the first coefficient calculation module is suitable for calculating a first coefficient of the superposed semitransparent watermark according to the mode of superposing the semitransparent watermark in the video file, the image of the non-black solid background and the identified semitransparent watermark;
and the semitransparent watermark removing module is suitable for determining the color value of each pixel point of each image of the video file before the semitransparent watermark is superimposed according to the mode of superimposing the semitransparent watermark in the video file, the identified semitransparent watermark and the first coefficient of superimposing the semitransparent watermark, and removing the semitransparent watermark in the video file.
The aforementioned first coefficient calculation module is specifically adapted to:
calculating a first coefficient of the superimposed semi-transparent watermark according to the following formula:
Figure BDA0003043472460000154
wherein alpha is a first coefficient of the superimposed semi-transparent watermark;
Figure BDA0003043472460000155
the color value of each pixel point of the image with the non-black solid background;
Figure BDA0003043472460000156
and the color value of a pixel point (x, y) of the image of the non-black solid background before the semitransparent watermark is superposed.
The aforementioned semi-transparent watermark removal module is further adapted to:
determining the color value of each pixel point of each image of the video file before the semitransparent watermark is superimposed according to the following formula:
Figure BDA0003043472460000157
wherein the content of the first and second substances,
Figure BDA0003043472460000158
the color value of a pixel point (x, y) of an image F of the video file before the semitransparent watermark is superposed;
Figure BDA0003043472460000161
is the color value of a pixel point (x, y) of an image F of the video file; alpha is the first coefficient of the superimposed semi-transparent watermark.
In another embodiment of the invention, the background image selection unit 91 of the apparatus shown in fig. 9 is further adapted to:
and selecting a frame of image with a pure black background from the video file which is superimposed with the semitransparent watermark and is arranged on the appointed video site.
According to the method and the device for identifying the semi-transparent watermark in the video file, the overlapped semi-transparent watermark is identified from the selected image of the pure black background according to the mode of overlapping the semi-transparent watermark in the video file, the selected image of the non-black pure color background and the identified semi-transparent watermark, the semi-transparent watermark in the video file is removed, the problem that the semi-transparent watermark is difficult to identify and remove in the prior art is solved, and the effective identification and removal of the semi-transparent watermark in the video can be realized.
It should be noted that:
the algorithms and displays presented herein are not inherently related to any particular computer, virtual machine, or other apparatus. Various general purpose devices may be used with the teachings herein. The required structure for constructing such a device will be apparent from the description above. Moreover, the present invention is not directed to any particular programming language. It is appreciated that a variety of programming languages may be used to implement the teachings of the present invention as described herein, and any descriptions of specific languages are provided above to disclose the best mode of the invention.
In the description provided herein, numerous specific details are set forth. It is understood, however, that embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, structures and techniques have not been shown in detail in order not to obscure an understanding of this description.
Similarly, it should be appreciated that in the foregoing description of exemplary embodiments of the invention, various features of the invention are sometimes grouped together in a single embodiment, figure, or description thereof for the purpose of streamlining the disclosure and aiding in the understanding of one or more of the various inventive aspects. However, the disclosed method should not be interpreted as reflecting an intention that: that the invention as claimed requires more features than are expressly recited in each claim. Rather, as the following claims reflect, inventive aspects lie in less than all features of a single foregoing disclosed embodiment. Thus, the claims following the detailed description are hereby expressly incorporated into this detailed description, with each claim standing on its own as a separate embodiment of this invention.
Those skilled in the art will appreciate that the modules in the device in an embodiment may be adaptively changed and disposed in one or more devices different from the embodiment. The modules or units or components of the embodiments may be combined into one module or unit or component, and furthermore they may be divided into a plurality of sub-modules or sub-units or sub-components. All of the features disclosed in this specification (including any accompanying claims, abstract and drawings), and all of the processes or elements of any method or apparatus so disclosed, may be combined in any combination, except combinations where at least some of such features and/or processes or elements are mutually exclusive. Each feature disclosed in this specification (including any accompanying claims, abstract and drawings) may be replaced by alternative features serving the same, equivalent or similar purpose, unless expressly stated otherwise.
Furthermore, those skilled in the art will appreciate that while some embodiments described herein include some features included in other embodiments, rather than other features, combinations of features of different embodiments are meant to be within the scope of the invention and form different embodiments. For example, in the following claims, any of the claimed embodiments may be used in any combination.
The various component embodiments of the invention may be implemented in hardware, or in software modules running on one or more processors, or in a combination thereof. It will be appreciated by those skilled in the art that a microprocessor or Digital Signal Processor (DSP) may be used in practice to implement some or all of the functions of some or all of the components of the apparatus for detecting a wearing state of an electronic device according to embodiments of the present invention. The present invention may also be embodied as apparatus or device programs (e.g., computer programs and computer program products) for performing a portion or all of the methods described herein. Such programs implementing the present invention may be stored on computer-readable media or may be in the form of one or more signals. Such a signal may be downloaded from an internet website or provided on a carrier signal or in any other form.
For example, fig. 4 shows a schematic structural diagram of an electronic device according to an embodiment of the invention. The electronic device conventionally comprises a processor 41 and a memory 42 arranged to store computer executable instructions (program code). The memory 42 may be an electronic memory such as a flash memory, an EEPROM (electrically erasable programmable read only memory), an EPROM, a hard disk, or a ROM. The memory 42 has a storage space 43 for storing program code 44 for performing the method steps shown in fig. 1 and in any of the embodiments. For example, the storage space 43 for the program code may comprise respective program codes 44 for respectively implementing the various steps in the above method. The program code can be read from or written to one or more computer program products. These computer program products comprise a program code carrier such as a hard disk, a Compact Disc (CD), a memory card or a floppy disk. Such a computer program product is typically a computer readable storage medium such as described in fig. 5. The computer readable storage medium may have memory segments, memory spaces, etc. arranged similarly to the memory 42 in the electronic device of fig. 4. The program code may be compressed, for example, in a suitable form. In general, the memory unit stores program code 51 for performing the steps of the method according to the invention, i.e. program code readable by a processor such as 41, which when run by an electronic device causes the electronic device to perform the individual steps of the method described above.
For example, fig. 10 shows a schematic structural diagram of an electronic device according to an embodiment of the invention. The electronic device conventionally comprises a processor 101 and a memory 102 arranged to store computer executable instructions (program code). The memory 102 may be an electronic memory such as a flash memory, an EEPROM (electrically erasable programmable read only memory), an EPROM, a hard disk, or a ROM. The memory 102 has a memory space 103 that stores program code 44 for performing the method steps shown in fig. 6 and in any of the embodiments. For example, the memory space 103 for the program code may comprise respective program codes 104 for implementing respective steps in the above method. The program code can be read from or written to one or more computer program products. These computer program products comprise a program code carrier such as a hard disk, a Compact Disc (CD), a memory card or a floppy disk. Such a computer program product is typically a computer readable storage medium such as described in fig. 11. The computer readable storage medium may have memory segments, memory spaces, etc. arranged similarly to the memory 102 in the electronic device of fig. 10. The program code may be compressed, for example, in a suitable form. In general, the memory unit stores program code 111 for performing the steps of the method according to the invention, i.e. program code readable by a processor such as 101, which when run by an electronic device causes the electronic device to perform the steps of the method described above.
It should be noted that the above-mentioned embodiments illustrate rather than limit the invention, and that those skilled in the art will be able to design alternative embodiments without departing from the scope of the appended claims. In the claims, any reference signs placed between parentheses shall not be construed as limiting the claim. The word "comprising" does not exclude the presence of elements or steps not listed in a claim. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements. The invention may be implemented by means of hardware comprising several distinct elements, and by means of a suitably programmed computer. In the unit claims enumerating several means, several of these means may be embodied by one and the same item of hardware. The usage of the words first, second and third, etcetera do not indicate any ordering. These words may be interpreted as names.

Claims (10)

1. A method of identifying a semi-transparent watermark in a video, wherein the method comprises:
selecting a frame of image with a pure black background from a video file overlapped with a semitransparent watermark;
identifying the overlapped semitransparent watermark from the image of the pure black background according to a mode of overlapping the semitransparent watermark in the video file;
wherein, the selecting a frame of image with pure black background from the video file superimposed with the semitransparent watermark comprises:
and selecting a frame of image with a pure black background from the video file which is superimposed with the semitransparent watermark and is arranged on the appointed video site.
2. The method of claim 1, wherein superimposing a semi-transparent watermark in the video file is by:
Figure FDA0003043472450000011
wherein the content of the first and second substances,
Figure FDA0003043472450000012
the color value of a pixel point (x, y) in an image F of the video file is obtained; alpha is the first coefficient of the superimposed semi-transparent watermark,
Figure FDA0003043472450000013
the color value of a pixel point (x, y) in an image F of the video file before the semitransparent watermark is superposed is taken as a color value; beta is a second coefficient of the superposed semitransparent watermark; wmx,yAnd (R, G and B) is the color value of the translucent watermark in the image F of the video file at the pixel point (x, y).
3. The method according to any of claims 1-2, wherein superimposing a semi-transparent watermark in the video file is by:
Figure FDA0003043472450000014
wherein the content of the first and second substances,
Figure FDA0003043472450000015
the color value of a pixel point (x, y) in an image F of the video file is obtained; alpha is the first coefficient of the superimposed semi-transparent watermark,
Figure FDA0003043472450000016
is the video textColor values of pixel points (x, y) in an image F of the piece before the semitransparent watermark is superposed; beta is a second coefficient of the superposed semitransparent watermark; wmx,yAnd (R, G and B) is the color value of the translucent watermark in the image F of the video file at the pixel point (x, y).
4. The method according to any one of claims 1 to 3,
identifying the superimposed semi-transparent watermark from the image of the solid black background according to the following formula:
Figure FDA0003043472450000017
wherein the content of the first and second substances,
Figure FDA0003043472450000018
image F being the solid black backgroundbAnd (5) the color value of the middle pixel point (x, y).
5. An apparatus for identifying a semi-transparent watermark in a video, wherein the apparatus comprises:
the pure black background image selection unit is suitable for selecting a frame of pure black background image from the video file superimposed with the semitransparent watermark;
the semitransparent watermark identifying unit is suitable for identifying the overlapped semitransparent watermark from the image of the pure black background according to a mode of overlapping the semitransparent watermark in the video file;
wherein the solid black background image selection unit is further adapted to:
and selecting a frame of image with a pure black background from the video file which is superimposed with the semitransparent watermark and is arranged on the appointed video site.
6. The apparatus of claim 5, wherein the solid black background image selection unit is further adapted to:
an image with RGB values of (0,0,0) is selected.
7. The apparatus according to any of claims 5-6, wherein the video file is overlaid with a semi-transparent watermark by:
Figure FDA0003043472450000021
wherein the content of the first and second substances,
Figure FDA0003043472450000022
the color value of a pixel point (x, y) in an image F of the video file is obtained; alpha is the first coefficient of the superimposed semi-transparent watermark,
Figure FDA0003043472450000023
the color value of a pixel point (x, y) in an image F of the video file before the semitransparent watermark is superposed is taken as a color value; beta is a second coefficient of the superposed semitransparent watermark; wmx,yAnd (R, G and B) is the color value of the translucent watermark in the image F of the video file at the pixel point (x, y).
8. The apparatus according to any of claims 5-7, wherein the translucent watermark identification unit is further adapted to:
identifying the superimposed semi-transparent watermark from the image of the solid black background according to the following formula:
Figure FDA0003043472450000024
wherein the content of the first and second substances,
Figure FDA0003043472450000025
image F being the solid black backgroundbAnd (5) the color value of the middle pixel point (x, y).
9. An electronic device, wherein the electronic device comprises:
a processor; and the number of the first and second groups,
a memory arranged to store computer executable instructions that, when executed, cause the processor to perform the method of any one of claims 1-4.
10. A computer readable storage medium, wherein the computer readable storage medium stores one or more programs which, when executed by a processor, implement the method of any of claims 1-4.
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CN109598231B (en) 2018-12-03 2021-03-02 广州市百果园信息技术有限公司 Video watermark identification method, device, equipment and storage medium
CN110662023B (en) * 2019-10-10 2021-05-07 苏州科达科技股份有限公司 Method and device for detecting video data loss and storage medium
CN113902804A (en) * 2021-10-14 2022-01-07 北京卓越乐享网络科技有限公司 Method, apparatus, device and medium for identifying transparent area in image

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6134346A (en) * 1998-01-16 2000-10-17 Ultimatte Corp Method for removing from an image the background surrounding a selected object
CN101179676A (en) * 2007-12-13 2008-05-14 北京中星微电子有限公司 Fixed image extracting method and apparatus in television picture
CN101472162A (en) * 2007-12-25 2009-07-01 北京大学 Method and device for embedding and recovering prime image from image with visible watermark
CN102521820A (en) * 2011-12-22 2012-06-27 张著岳 Object picture display method with dynamic fusion of background and display method thereof

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2071822A1 (en) * 2007-12-13 2009-06-17 Thomson Licensing Method and apparatus for inserting a removable visible watermark in an image and method and apparatus for removing such watermarks
CN101923733B (en) * 2010-08-16 2015-04-01 中兴通讯股份有限公司 Method and device for processing electronic entrance ticket
CN102456212A (en) * 2010-10-19 2012-05-16 北大方正集团有限公司 Separation method and system for visible watermark in numerical image
CN101980542B (en) * 2010-11-16 2012-08-22 上海交通大学 Video digital fingerprints embedding based on timing sequence vibration and error correcting code and testing method thereof
CN102024146B (en) * 2010-12-08 2012-11-07 江苏大学 Method for extracting foreground in piggery monitoring video
US8379911B2 (en) * 2010-12-10 2013-02-19 Infosys Technologies Limited Method and system for efficient watermarking of video content
US9292897B2 (en) * 2012-10-05 2016-03-22 Mobitv, Inc. Watermarking of images
CN102999712A (en) * 2012-11-21 2013-03-27 上海山景集成电路股份有限公司 Method and system for watermark production and extraction of multimedia, and multimedia publishing system
CN107750015B (en) * 2017-11-02 2019-05-07 腾讯科技（深圳）有限公司 Detection method, device, storage medium and the equipment of video copy

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6134346A (en) * 1998-01-16 2000-10-17 Ultimatte Corp Method for removing from an image the background surrounding a selected object
CN101179676A (en) * 2007-12-13 2008-05-14 北京中星微电子有限公司 Fixed image extracting method and apparatus in television picture
CN101472162A (en) * 2007-12-25 2009-07-01 北京大学 Method and device for embedding and recovering prime image from image with visible watermark
CN102521820A (en) * 2011-12-22 2012-06-27 张著岳 Object picture display method with dynamic fusion of background and display method thereof

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Application publication date: 20210803